TV lift cabinets are great accessories for your home theater system. The only trouble is that while you can you get a smaller bedroom-sized lift cabinet for under a thousand bucks, cabinets for full size home theater TVs(up to 60") can go up to two or three grand. Here's a design you can make yourself and accommodate as big as a TV as you'd like for less than half that amount.

Instructables user ihart came up with the design based on a $540 Firgelli Lift that includes an IR detector and remote control. The author used birch plywood, wood panel molding, an IR repeater, and various hardware odds and ends to build the cabinet at a total cost of around $1,000. Not cheap, obviously, but cheaper than preconstructed cabinets for larger TVs and this design offers storage space for all your audio/video components as well as media and gaming accessories.